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Aorta segmentation with a 3D level set approach and quantification of aortic calcifications in non-contrast chest CT

S. Kurugol, Raul San Jose Estepar, J. Ross, G. R. Washko
2012 2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society  
Automatic aorta segmentation in thoracic computed tomography (CT) scans is important for aortic calcification quantification and to guide the segmentation of other central vessels.  ...  We propose an aorta segmentation algorithm consisting of an initial boundary detection step followed by 3D level set segmentation for refinement.  ...  Acknowledgments We thank to all the COPDGene Investigators for the data used in the paper. We also thank Nina Muralidhar for manual segmentations of aorta and aortic calcifications.  ... 
doi:10.1109/embc.2012.6346433 pmid:23366394 pmcid:PMC3671590 fatcat:s7pbkei23fg43kv24rr4qxpqqa

Automated aortic calcification detection in low-dose chest CT images

Yiting Xie, Yu Maw Htwe, Jennifer Padgett, Claudia Henschke, David Yankelevitz, Anthony P. Reeves, Stephen Aylward, Lubomir M. Hadjiiski
2014 Medical Imaging 2014: Computer-Aided Diagnosis  
We have developed a fully automated computer algorithm to segment and measure aortic calcification in low-dose noncontrast, non-ECG gated, chest CT scans.  ...  Then based on the segmented aorta, aortic calcification is detected and measured in terms of the Agatston score, mass score, and volume score.  ...  ACKNOWLEDGMENT This study was supported by a grant from the Flight Attendant Medical Research Institute (FAMRI).  ... 
doi:10.1117/12.2043810 dblp:conf/micad/XieHPHYR14 fatcat:jgu6ptunczexdou2i3dlhb55qy

AI for Calcium Scoring [article]

Sanne G.M. van Velzen, Nils Hampe, Bob D. de Vos, Ivana Išgum
2021 arXiv   pre-print
Calcium scoring, a process in which arterial calcifications are detected and quantified in CT, is valuable in estimating the risk of cardiovascular disease events.  ...  Especially when used to quantify the extent of calcification in the coronary arteries, it is a strong and independent predictor of coronary heart disease events.  ...  Calcium scoring in non-contrast CT showing the heart Over 7 million non-contrast chest CT scans are annually acquired for clinical care in the United States alone.  ... 
arXiv:2105.12558v1 fatcat:garralykpbeaxdxma6qrgbak5m

Automatic Calcium Scoring in Low-Dose Chest CT Using Deep Neural Networks With Dilated Convolutions

Nikolas Lessmann, Bram van Ginneken, Majd Zreik, Pim A. de Jong, Bob D. de Vos, Max A. Viergever, Ivana Isgum
2018 IEEE Transactions on Medical Imaging  
This paper presents a method for automatic detection of coronary artery, thoracic aorta and cardiac valve calcifications in low-dose chest CT using two consecutive convolutional neural networks.  ...  Low-dose chest CT scans acquired in screening enable quantification of atherosclerotic calcifications and thus enable identification of subjects at increased cardiovascular risk.  ...  To enable other researchers to request the same data and perform a comparison with the here presented results, NCI has been provided with the list of scans used in this study.  ... 
doi:10.1109/tmi.2017.2769839 pmid:29408789 fatcat:vrumaib6lnbrdnf35xnhdukyvu

The role of computed tomography in pre-procedural planning of cardiovascular surgery and intervention

Prabhakar Rajiah, Paul Schoenhagen
2013 Insights into Imaging  
This pictorial review describes the role of CT in the preoperative evaluation of patients undergoing cardiovascular surgeries and intervention.  ...  Advances in our knowledge of cardiovascular disorders coupled with technological innovations have enabled the increased use of minimally invasive cardiovascular surgeries and transcatheter interventions  ...  CT has high accuracy and reproducibility in detection and quantification of aortic calcification [20] .  ... 
doi:10.1007/s13244-013-0270-8 pmid:23907804 pmcid:PMC3781248 fatcat:eu4sbm2djnb3xnjk2ag7nlja5y

The role of advanced reconstruction algorithms in cardiac CT

Sandra S. Halliburton, Yuki Tanabe, Sasan Partovi, Prabhakar Rajiah
2017 Cardiovascular Diagnosis and Therapy  
FBP is a simple reconstruction technique that requires relatively little computational processing, but is associated with higher noise and poor contrast resolution.  ...  Rigorous validation has come from both retrospective and prospective studies demonstrating non-inferiority of coronary CT data acquired at lower doses and reconstructed with IR techniques compared to standard  ...  Footnote Conflicts of Interest: Dr. SS Halliburton is employee of Philips Healthcare. The other authors have no conflicts of interest to declare.  ... 
doi:10.21037/cdt.2017.08.12 pmid:29255694 pmcid:PMC5716948 fatcat:wa36vchxd5ci7gzcoioeamnl2i

Diagnosis of aortic valvular stenosis by multislice cardiac computed tomography

E. Bouvier, D. Logeart, J.-L. Sablayrolles, J. Feignoux, C. Scheuble, T. Touche, G. Thabut, A. Cohen-Solal
2006 European Heart Journal  
Conclusion CT analysis of aortic valve is feasible in most cases and allows for reliable diagnosis and quantification of AS.  ...  We evaluated the diagnostic accuracy of multislice CT for the identification and quantification of aortic valvular stenosis (AS), compared with echography.  ...  In addition, cardiac CT results in a unique 3D image, which allows for analysis of the aortic valve in any plane and with various rendering techniques (multiplanar reformat, volume rendering, navigation  ... 
doi:10.1093/eurheartj/ehl273 pmid:17015404 fatcat:yckmhmel5fbkjlynr4bkqdndai

Imaging of congenital heart disease in adults

Sonya V. Babu-Narayan, George Giannakoulas, Anne Marie Valente, Wei Li, Michael A. Gatzoulis
2015 European Heart Journal  
LV; left ventricle, RV; right ventricle CT in a patient with RV-PA conduit (A), showing virtually single origin coronary arteries passing between the aorta and narrow segment of conduit (B-D).  ...  Figure 4 Large 4 ASD (asterisk) at 3D TOE (A) with relative lack of a posterior rim (B).  ... 
doi:10.1093/eurheartj/ehv519 pmid:26424866 pmcid:PMC5841226 fatcat:2lqi2a6aorfx3lx3mcbxnddilq

Cardiac Computed Tomography – More Than Coronary Arteries? A Clinical Update
Kardinale CT: Mehr als nur Koronarien? Ein Abgleich mit dem Alltag

Jana Taron, Borek Foldyna, Parastou Eslami, Udo Hoffmann, Konstantin Nikolaou, Fabian Bamberg
2019 RöFo. Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren (Print)  
The goal is to summarize the current guidelines on performing cardiac CT and to list established as well as emerging techniques with a special focus on extracoronary applications.  ...  Besides coronary CTA, novel applications such as the calculation of a CT-derived fractional flow reserve (CT-FFR), assessment of myocardial function and perfusion imaging, as well as pre-interventional  ...  Non-contrast cardiac CT allows the quantification of coronary calcification (to determine a calcium score/Agatston score [14] ) at very lowradiation doses (< 1 mSv).  ... 
doi:10.1055/a-0924-5883 pmid:31250415 pmcid:PMC6839890 fatcat:4tuwhj6x6nayzfxj7tldfvrboi

Recommendations for transoesophageal echocardiography: EACVI update 2014

Frank A. Flachskampf, Patrick F. Wouters, Thor Edvardsen, Artur Evangelista, Gilbert Habib, Piotr Hoffman, Rainer Hoffmann, Patrizio Lancellotti, Mauro Pepi
2014 European Heart Journal-Cardiovascular Imaging  
(A) A short-axis view of aortic root at the level of the aortic prosthesis and the left main coronary; (B) a longitudinal view of the ascending aorta showing the aortic prosthesis length and the overlap  ...  Several studies demonstrated that aortic annulus measurements by TOE showed a slight underestimation in comparison with CT (more pronounced with 2D TOE than with 3D TOE).  ... 
doi:10.1093/ehjci/jeu015 pmid:24554131 fatcat:6ymdv64sxff3fcqamiba23nnc4

Expert consensus for multi-modality imaging evaluation of cardiovascular complications of radiotherapy in adults: a report from the European Association of Cardiovascular Imaging and the American Society of Echocardiography

P. Lancellotti, V. T. Nkomo, L. P. Badano, J. Bergler-Klein, J. Bogaert, L. Davin, B. Cosyns, P. Coucke, R. Dulgheru, T. Edvardsen, O. Gaemperli, M. Galderisi (+11 others)
2013 European Heart Journal-Cardiovascular Imaging  
The gain in life expectancy obtained with anti-cancer therapy can be compromised by increased morbidity and mortality associated with its cardiac complications.  ...  An evidence-based review of several imaging approaches used to detect, evaluate, and monitor RIHD is discussed.  ...  Conflict of interest: none declared. Funding No financial assistance was received to support this study.  ... 
doi:10.1093/ehjci/jet238 fatcat:xxxssrieqrfsrhprn6iv47hoaa

Expert consensus for multi-modality imaging evaluation of cardiovascular complications of radiotherapy in adults: a report from the European Association of Cardiovascular Imaging and the American Society of Echocardiography

P. Lancellotti, V. T. Nkomo, L. P. Badano, J. Bergler-Klein, J. Bogaert, L. Davin, B. Cosyns, P. Coucke, R. Dulgheru, T. Edvardsen, O. Gaemperli, M. Galderisi (+11 others)
2013 European Heart Journal-Cardiovascular Imaging  
The gain in life expectancy obtained with anti-cancer therapy can be compromised by increased morbidity and mortality associated with its cardiac complications.  ...  An evidence-based review of several imaging approaches used to detect, evaluate, and monitor RIHD is discussed.  ...  Conflict of interest: none declared. Funding No financial assistance was received to support this study.  ... 
doi:10.1093/ehjci/jet123 pmid:23847385 fatcat:wl5pntqjynfdjj7do76pc6igrm

Cardiac computed tomography in cardio-oncology: an update on recent clinical applications

Stefania Rosmini, Ankita Aggarwal, Daniel H Chen, John Conibear, Ceri L Davies, Amit Kumar Dey, Paula Edwards, Avirup Guha, Arjun K Ghosh
2021 European Heart Journal-Cardiovascular Imaging  
Cardiac computed tomography (CT) with calcium scoring has a role in screening asymptomatic patients for premature CAD, cardiac CT angiography (CTCA) allows the identification of significant CAD, also in  ...  This review aims to provide an update on its current use and accompanying evidence-base for cardiac CT in the management of cardio-oncology patients.  ...  , and non-contrast CT allows for the quantification of coronary calcium; a calcific lesion is defined by a computed tomographic density of 130 Hounsfield units having an area > _1 mm. 11 The identification  ... 
doi:10.1093/ehjci/jeaa351 pmid:33555007 pmcid:PMC8453276 fatcat:kbyc3dg6ojeubkxd7vlz3fscyi

Expert Consensus for Multi-Modality Imaging Evaluation of Cardiovascular Complications of Radiotherapy in Adults: A Report from the European Association of Cardiovascular Imaging and the American Society of Echocardiography

Patrizio Lancellotti, Vuyisile T. Nkomo, Luigi P. Badano, Jutta Bergler, Jan Bogaert, Laurent Davin, Bernard Cosyns, Philippe Coucke, Raluca Dulgheru, Thor Edvardsen, Oliver Gaemperli, Maurizio Galderisi (+11 others)
2013 Journal of the American Society of Echocardiography  
The gain in life expectancy obtained with anti-cancer therapy can be compromised by increased morbidity and mortality associated with its cardiac complications.  ...  An evidence-based review of several imaging approaches used to detect, evaluate, and monitor RIHD is discussed.  ...  Pericardial calcifications (Figure 3D ), as well as larger pericardial effusion, are readily identified, and also, on non-enhanced CT images.  ... 
doi:10.1016/j.echo.2013.07.005 pmid:23998694 fatcat:voydakydnzffnejxy57gsiemra

Rac2 Modulates Atherosclerotic Calcification by Regulating Macrophage Interleukin-1β ProductionHighlights

Nicolle Ceneri, Lina Zhao, Bryan D. Young, Abigail Healy, Suleyman Coskun, Hema Vasavada, Timur O. Yarovinsky, Kenneth Ike, Ruggero Pardi, Lingfen Qin, Li Qin, George Tellides (+7 others)
2016 Arteriosclerosis, Thrombosis and Vascular Biology  
Approach and Results-Here we identify Rac2 as a major inflammatory regulator of signaling that directs plaque osteogenesis.  ...  In experimental atherogenesis, Rac2 prevented progressive calcification through its suppression of Rac1-dependent macrophage IL-1β expression, which in turn is a key driver of vascular smooth muscle cell  ...  We thank Swedish Orphan Biovitrum AB (SOBI) for their generous donation of anakinra for use in our studies.  ... 
doi:10.1161/atvbaha.116.308507 pmid:27834690 pmcid:PMC5269510 fatcat:i3irlfjfu5fibmagy6lp3owaca
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